AT50KIT Includes 50mm stand-off, holesaw & 12 test dollies (Acessory for PosiTest AT-A Automatic Pull-Off Adhesion Tester) Go to amazon.com Related posts Check expert advices for positest ata 50? DescriptionThe AT-50-KIT Includes 50mm stand-off, holesaw & 12 test dollies is an accessory or spare part for the PosiTest AT-M Manual Pull-Off Adhesion Tester.